CN103056934B - All-bamboo tapered-joint extension material and manufacturing method thereof - Google Patents
All-bamboo tapered-joint extension material and manufacturing method thereof Download PDFInfo
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- CN103056934B CN103056934B CN201310007266.4A CN201310007266A CN103056934B CN 103056934 B CN103056934 B CN 103056934B CN 201310007266 A CN201310007266 A CN 201310007266A CN 103056934 B CN103056934 B CN 103056934B
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Abstract
The invention discloses all-bamboo tapered-joint extension material which is formed by connecting a group of bamboo segments in sequence. The outer surface of one end of each bamboo segment is a tapered outer surface gradually shrinking to the end to form a male joint, and the inner surface of the other end of the bamboo segment is a tapered inner surface gradually expanding to the end to form a female joint; at connecting ends of two adjacently connected bamboo segments, the tapered outer surface is inserted into the tapered inner surface, and a glue layer is arranged between the outer surface and the inner surface. The problem that natural bamboo is hard to lengthen and has application limitations is solved. Longitudinal extension is achieved. Natural structure of the bamboo is kept. Utilization rate of the bamboo and added value of products are increased. Bamboo material in any length can be manufactured according to different needs, and accordingly bamboo application field is widened. The invention further provides a manufacturing method of the all-bamboo tapered-joint extension material.
Description
Technical field
The invention belongs to Material Field, espespecially a kind of is that raw material makes the whole bamboo tapered joint prolongation material and manufacture method thereof that can improve natural bamboo utilization rate with natural bamboo.
Background technology
Bamboo grove is called the second largest forest of the earth, and China has bamboo grove the biggest in the world, exploitation bamboo resource to China's economy and ecological construction significant.It is short that bamboo wood has growth cycle, is the material of green sustainable application.In addition, the structure of the hollow belt joint of bamboo wood makes bamboo wood have high longitudinal tension, compression strength, bending strength, the advantages such as good springiness, is excellent industrial bio matter raw material.At present, bamboo wood is used widely as the living beings raw material of industry, do not carry out bamboo matter and produce wood-based plate, laminated timber, and original-state bamboo wood is also fully developed by means of only bamboo wood modification.But due to bamboo wood spontaneous growth, cause its some local buckling, shape abnormity, limit its commercial Application widely.At present, in timber field application, utilize joggle technology to connect two blocks of timber and be widely used, have some scholars in bamboo wood application and joggle technology is applied to bamboo wood connection.The joggle technique of current employing connected fitting is processed into zigzag is mutual cementingly to be realized.For hollow whole bamboo, joggle technology cannot ensure to connect the central coaxial degree of bamboo wood, and the limited joggle intensity that causes of contact area that refers to of tenon is not high simultaneously.
Through retrieval, at present also without any about the patent of bamboo wood taper connection and non-patent literature.
Summary of the invention
The main object of the present invention is to provide a kind of whole bamboo tapered joint to extend material, realizes the extend longitudinally of bamboo wood.
Another object of the present invention is to provide whole bamboo tapered joint to extend the manufacture method of material.
To achieve these goals, the present invention is by the following technical solutions:
A kind of whole bamboo tapered joint extends material, it is connected in sequence by one group of bamboo section, each described bamboo section, wherein the outer surface of one end be one to termination convergent conical external surface formed male contact, the inner surface of the other end is one form famale connector to the conical inner surface of termination flaring, the link of two described bamboo sections of adjacent connection, described conical external surface is plugged in described conical inner surface, arranges adhesive layer between described outer surface and inner surface.
Connected the joint of each described bamboo section by adhesive, form the bamboo wood of setting size.
Further, a boss is provided with between the cylindrical outer surface of the innermost end of the conical external surface of described male contact and the adjacent regions of bamboo section; And/or, be provided with a boss between the innermost end of the conical inner surface of described famale connector and the cylindrical internal surface of bamboo section adjacent regions.
The interconnective male contact of two described bamboo sections of adjacent connection and the junction external diameter correspondent equal of famale connector.
Further, the described outer surface of the male contact of two of adjacent connection described bamboo sections and the described inner surface of famale connector form clearance fit relationship.
Described male contact is preferably equal with the axial length of the famale connector be attached thereto.
The adhesive of described adhesive substratum is the adhesive that UF, PF, MDI or other this areas are commonly used.
The length of each described bamboo section is intercepted according to bending, the tapering situation of each described bamboo section, wherein: beat according to the surface circle of each described bamboo section and determine the bending of each described bamboo section, outer surface to be processed and the tapering of inner surface is determined, fracture and each described bamboo section axes normal by the large and small end diameter difference of each described bamboo section and the lenth ratio of each described bamboo section.
A kind of whole bamboo tapered joint extends material manufacturing method, comprises following making step:
(1) natural whole bamboo is bending according to it, tapering situation intercepts the bamboo section of preseting length, wherein: beated by bamboo section surface circle and determine that bamboo section bends, by the large and small end diameter difference of bamboo section and bamboo segment length ratio determination tapering, sawed-off end face is perpendicular to bamboo section axis;
(2) bamboo section is heat-treated, to reach anticracking and to keep dimensionally stable function;
(3) the conical external surface processed respectively at each bamboo section two ends to termination convergent forms male contact and forms famale connector to the conical inner surface of termination flaring;
(4) gluing on the described male contact processed and famale connector, is plugged in together;
(5) the bamboo section after grafting is longitudinally exerted pressure, carry out cold or heat cure;
(6) surface treatment is carried out to the joint that tapered joint extends whole bamboo.
Surface treatment in step (6) such as comprises the adhesive removing and extrude..
In step (1), extend the bamboo section in material as tapered joint, its circle beating degree is preferably≤10mm, limits the flexibility of bamboo section with this.
The tapering of bamboo section is: (outside diameter-end diameter)/bamboo segment length), this tapering preferably≤0.02 is advisable.
The tapering of the taper seat of described male contact and famale connector is preferably 0.06 ~ 0.13.
The axial length of the taper seat of described male contact and famale connector is preferably 30 ~ 60mm.
The invention has the beneficial effects as follows: bamboo section of the present invention passes through male contact and the famale connector combination of taper surface, and taper surface joint is relative to finger of the prior art, and it is 360 degree of circumference contacts, and bonding strength is much larger than finger.On the other hand, taper surface joint more can ensure the axiality of whole bamboo, and this is that existing joggle not had.By such tapered joint, original-state bamboo wood out-of-shape, defect that central axis is bending can be solved, compared with existing joggle connected mode, solve joggle bamboo wood central axis inconsistence problems, realize the Axis Consistency that bamboo wood connects, improve the bonding strength of material.Make full use of original-state bamboo wood intensity high feature, overcome the inconsistent defect of bamboo wood shape, use this material can realize tapered joint and extend the central axis of bamboo wood unanimously, expand the range of application of bamboo wood.In addition, traditional cylinder is connected and changes taper into, improve bonding strength and facilitate attended operation.
Below in conjunction with the drawings and specific embodiments, the invention will be further described, not limitation of the present invention, and the equivalent replacement of every any this area of carrying out according to the disclosure of invention, all belongs to protection scope of the present invention.
Accompanying drawing explanation
Fig. 1 is the process chart of a preferred embodiment of the present invention;
Fig. 2 be the whole bamboo of a preferred embodiment of the present invention sawed-off after bamboo section schematic diagram, i.e. sawed-off well-thought-out plan section operation;
Fig. 3 is the bamboo section taper connection schematic diagram of a preferred embodiment of the present invention, instant heating, bonding process of colding pressing;
Fig. 4 is the bamboo section processing taper joint schematic diagram of a preferred embodiment of the present invention, i.e. negative and positive taper joint.
Drawing reference numeral: 1: bamboo section; 2: male contact; 3: famale connector.
Detailed description of the invention
Below only with embodiment, the enforcement aspect that the present invention is possible is described, but and be not used to limit the present invention institute for protect category, first give chat bright.
Below in conjunction with accompanying drawing and a preferred embodiment, the invention will be further described.
With reference to shown in Fig. 1, it is the process chart of a preferred embodiment of the present invention.A kind of whole bamboo tapered joint extends material manufacturing method, comprises the steps
(1) the original whole bamboo selected is mao bamboon, the length that mao bamboon is bending according to it, tapering situation intercepts bamboo section 1, wherein: bamboo section 1 surface circle beats≤10mm(measures bamboo section and bends), tapering ((outside diameter-end diameter)/bamboo segment length)≤0.02, fracture and bamboo section 1 axes normal, obtain bamboo section 1(and see Fig. 2);
(2) according to needs, bamboo section 1 is heat-treated, reach anticracking and keep dimensionally stable function;
Heat treated specific practice can be such as:
Ring is bored a hole;
Boiling process: bamboo section immersed in concentration 0.8% sodium chloride and 1% acetic acid mixed solution, constant pressure water temperature is raised to 90 DEG C by nature, heating-up time 15min, boiling boiling 4h.
Steam heating: whole bamboo section is neatly placed in vapor can, by the vapour pressure of 0.18Mpa, temperature 116 DEG C, constant heat treatment 90min.
Dry: the bamboo section after steam heating to be put into the dry kiln with spray steaming function and carry out drying, be divided into the following operational phase:
A. the drying of whole bamboo section is piled up: steam in damping temperature steam dry kiln can spray, controllable wind speed reaches 3 meters/s.The axial line of whole bamboo section is consistent with thermal air current velocity attitude.The whole bamboo section in front and back should be on the same axis.Levels whole bamboo section application parting bead evenly separates.
B. dry initial period-high humidity warm-up phase.Whole bamboo section at high humidity warm-up phase is: kiln humidity is 90%, temperature 60 C, time 24h.
C. dry period-drying stage.The temperature of drying stage is 55 DEG C, and humidity is 75%, and the time is 48h.
D. dry end period-balance drying stage.The temperature of whole bamboo section balance drying stage is 58 DEG C, and humidity is 85%, and the time is 24h.After dry, whole bamboo section moisture content reaches 12%.
Heat-treating dry main purpose is to make bamboo section anticorrosion, anticracking, and bamboo section can also be made to ensure dimensional stability.
(3) as Fig. 3, male contact 2 and famale connector 3 is processed respectively at every bamboo section 1 two ends outer surface and inner surface;
(4) bamboo section 1 liang of end connector gluing of taper joint is being processed;
(5) the bamboo section after gluing is longitudinally exerted pressure, carry out cold or hot pressurization that is cold or heat cure bonding, select adhesive to be the adhesive that UF, PF, MDI or other this areas are commonly used, see Fig. 4;
(6) whole bamboo joint is extended to tapered joint and carry out surface treatment.
As shown in Figure 2, Fig. 2 be the whole bamboo of a preferred embodiment of the present invention sawed-off after bamboo section schematic diagram, i.e. sawed-off well-thought-out plan section operation.The length of each described bamboo section 1 is intercepted according to bending, the tapering situation of each described bamboo section 1, wherein: beat according to the surface circle of each described bamboo section 1 and determine the bending of each described bamboo section 1, by ratio determination tapering, fracture and each described bamboo section 1 axes normal of the large and small end diameter difference of each described bamboo section 1 and the length of each described bamboo section 1.
Fig. 3 is the bamboo section taper connection schematic diagram of a preferred embodiment of the present invention, instant heating, bonding process of colding pressing.By the adhesive that bonding adhesive is commonly used as UF, PF, MDI or other this areas, the bonding two adjacent bamboo sections 1 of hot, cold pressurization.
Fig. 4 is the bamboo section processing taper joint schematic diagram of a preferred embodiment of the present invention, i.e. negative and positive taper joint.Two end connectors of each described bamboo section 1 are taper, two described bamboo sections 1 of adjacent connection, one end outer surface of bamboo section 1 described in one of them is the conical male contact 2 of certain length, one end inner surface of bamboo section 1 described in another is the conical famale connector 3 of same length, male contact 2 and famale connector 3 shape one show guarantee coordinate.The end face of two described bamboo sections 1 of adjacent connection is respectively male contact 2 and the famale connector 3 of matched in clearance.The male contact 2 of two described bamboo sections 1 of adjacent connection is consistent with the junction diameter of famale connector 3.
The tapering of the taper seat of described male contact and famale connector is 0.1 to be advisable.The axial length of the taper seat of described male contact and famale connector is that 40mm is advisable.
This preferred embodiment makes full use of original cylindrical of whole bamboo, and be processed into taper joint, taper joint is relative to the finger of prior art, and it is 360 degree of circumference contacts, and bonding strength is much larger than joggle.On the other hand, taper joint more can ensure the axiality of whole bamboo, and this is that existing joggle is unexistent.
Certainly, male contact 2 and famale connector 3 also can be that corresponding position diameter is inconsistent, the diameter of male contact is slightly larger than the diameter of famale connector, and the axial length of famale connector is equal to or greater than the axial length of male contact, like this, when longitudinally connecting, through longitudinal force, male contact and famale connector can form interference fit.
Innovative point of the present invention is by tapered joint structure, can ensure the Axis Consistency that bamboo wood connects, and improves the bonding strength of material, overcomes joggle bamboo wood central axis inconsistence problems.
Claims (3)
1. whole bamboo tapered joint extends a preparation method for material, it is characterized in that: comprise following making step:
(1) natural whole bamboo is bending according to it, tapering situation intercepts the bamboo section of preseting length, wherein: determine bamboo section flexibility by bamboo section surface circle beating degree, by the large and small end diameter difference of bamboo section and bamboo segment length ratio determination tapering, sawed-off end face is perpendicular to bamboo section axis;
(2) bamboo section is heat-treated, to reach anticracking and to keep dimensionally stable function;
(3) the conical external surface processed respectively at each bamboo section two ends to termination convergent forms male contact and forms famale connector to the conical inner surface of termination flaring;
(4) gluing on the described male contact processed and famale connector, is plugged in together;
(5) the bamboo section after grafting is longitudinally exerted pressure, carry out cold or heat cure;
(6) surface treatment is carried out to the joint that tapered joint extends whole bamboo.
2. whole bamboo tapered joint according to claim 1 extends the preparation method of material, it is characterized in that: in step (1), extends the bamboo section in material as tapered joint, and the difference of its circle beating degree is≤10mm, limits the flexibility of bamboo section with this; And/or,
The tapering of bamboo section is: (outside diameter-end diameter)/bamboo segment length, is advisable in this tapering≤0.02.
3. whole bamboo tapered joint according to claim 1 and 2 extends the preparation method of material, it is characterized in that: the tapering of the taper seat of described male contact and famale connector is 0.06 ~ 0.13; And/or,
The axial length of the taper seat of described male contact and famale connector is 30 ~ 60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007266.4A CN103056934B (en) | 2013-01-08 | 2013-01-08 | All-bamboo tapered-joint extension material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007266.4A CN103056934B (en) | 2013-01-08 | 2013-01-08 | All-bamboo tapered-joint extension material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103056934A CN103056934A (en) | 2013-04-24 |
| CN103056934B true CN103056934B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310007266.4A Expired - Fee Related CN103056934B (en) | 2013-01-08 | 2013-01-08 | All-bamboo tapered-joint extension material and manufacturing method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808007B (en) * | 2019-03-22 | 2022-01-07 | 南京林业大学 | Method for manufacturing bamboo tube end convenient to connect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI63996B (en) * | 1981-02-13 | 1983-05-31 | Exel Oy | TELESKOPROER OCH FOERFARANDE FOER DESS FRAMSTAELLNING |
| US6581351B2 (en) * | 2000-05-02 | 2003-06-24 | Devivi David C. | Flooring |
| CN101323124A (en) * | 2007-12-07 | 2008-12-17 | 国家林业局北京林业机械研究所 | Bamboo wood original state regular polygon recombined material and method for producing the same |
| CN201198158Y (en) * | 2007-12-26 | 2009-02-25 | 国家林业局北京林业机械研究所 | Bamboo wood original state polygonal recombinant material |
| CN201944456U (en) * | 2011-02-14 | 2011-08-24 | 王华新 | Connecting pipe capable of being sheathed and fixed end to end |
| CN103659978A (en) * | 2012-09-07 | 2014-03-26 | 安吉洁家竹木制品有限公司 | Treatment method for preventing bamboo material from cracking and being damaged by worms |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081420A (en) * | 2000-09-05 | 2002-03-22 | Kao Corp | Connecting structure for pipe |
| JP2003269664A (en) * | 2002-03-15 | 2003-09-25 | Japan Found Eng Co Ltd | Pipe connecting structure |
-
2013
- 2013-01-08 CN CN201310007266.4A patent/CN103056934B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI63996B (en) * | 1981-02-13 | 1983-05-31 | Exel Oy | TELESKOPROER OCH FOERFARANDE FOER DESS FRAMSTAELLNING |
| US6581351B2 (en) * | 2000-05-02 | 2003-06-24 | Devivi David C. | Flooring |
| CN101323124A (en) * | 2007-12-07 | 2008-12-17 | 国家林业局北京林业机械研究所 | Bamboo wood original state regular polygon recombined material and method for producing the same |
| CN201198158Y (en) * | 2007-12-26 | 2009-02-25 | 国家林业局北京林业机械研究所 | Bamboo wood original state polygonal recombinant material |
| CN201944456U (en) * | 2011-02-14 | 2011-08-24 | 王华新 | Connecting pipe capable of being sheathed and fixed end to end |
| CN103659978A (en) * | 2012-09-07 | 2014-03-26 | 安吉洁家竹木制品有限公司 | Treatment method for preventing bamboo material from cracking and being damaged by worms |
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| CN103056934A (en) | 2013-04-24 |
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Granted publication date: 20150121 Termination date: 20200108 |